JP3661463B2 - Positioning jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a positioning jig for positioning various components (subassemblies) of an E / C assembly in an assembly process of an engine compartment assembly (E / C assembly) which is a part of a vehicle body, for example.
[0002]
[Prior art]
For this type of positioning jig, for example, a technique disclosed in Japanese Patent Laid-Open No. 3-43025 or Japanese Patent Laid-Open No. 10-166230 is known. These techniques are configured so that a member that serves as a workpiece positioning reference with respect to the pallet main body can be individually attached or detached from various substrates. Thereby, it is possible to select and replace a reference member or a substrate that is suitable for the type of workpiece, thereby enabling positioning corresponding to various workpieces.
[0003]
[Problems to be solved by the invention]
However, in the assembly process using the E / C assembly or the like as a workpiece, if the shape of the workpiece changes depending on the vehicle type, the reference member and the substrate must be replaced each time. The nature is low. Also, in positioning jigs such as E / C Assy, reference posts for positioning each component are often placed outside the workpiece, and this reference post is an obstacle to setting the workpiece. In addition, it will prevent the welding gun from entering.
[0004]
The present invention is intended to solve the above-mentioned problems, and its purpose is to increase the versatility of the positioning jig, facilitate the setting of the workpiece, and reduce obstacles that prevent the welding gun from entering. is there.
[0005]
[Means for Solving the Problems]
The present invention is for achieving the above-mentioned object, and the invention according to claim 1 is a positioning jig for positioning each component in the work assembling step, wherein the jig main body includes an upper jig and a lower jig. The lower jig is provided with a collective reference for positioning workpiece components common to each vehicle type. The upper jig is provided with a reference for positioning a workpiece component that varies depending on the vehicle type. And the reference | standard of both jig | tool is arrange | positioned so that the component of a workpiece | work may be positioned from an inner side.
[0006]
As described above, the lower jig is provided with a standard for positioning the workpiece components common to each vehicle type. Therefore, the upper jig reference is selectively used according to the vehicle type, or the upper jig is used. By selecting use of the jig itself, versatility as a positioning jig is improved. In some cases, it is possible to respond to vehicle model changes by simply exchanging the upper jig.
[0007]
Moreover, since the reference | standard of both jig | tool is located inside a workpiece | work, the operation | work which sets a workpiece | work to a jig | tool main body becomes easy. Further, spot welding is usually performed from the outside of the workpiece, but the reference does not hinder the penetration of the welding gun, and the welding operation can be performed efficiently.
[0008]
Specifically, the upper jig and the lower jig each have a frame structure, and each reference is constituted by a column-shaped reference post fixed to the upper jig and its accessory parts. If there are many target vehicle types, only the upper jig may be exchanged depending on the vehicle type. For this purpose, it is necessary to prepare a plurality of types of upper jigs having different standards.
[0009]
Invention of Claim 2 is the positioning jig of Claim 1, Comprising: The upper jig and the lower jig are provided with the clamper which hold | maintains the component of a workpiece in the positioning state with respect to each reference | standard, These Among the clampers, those that clamp the workpiece from the outside are arranged so as not to prevent the welding gun from entering.
In this case, the clamper indispensable for the positioning jig does not become an obstacle to welding, and the ease of welding work can be maintained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
FIG. 1 is a front view showing an E / C assembly positioning jig, and FIG. 2 is a right side view of FIG. As is clear from these drawings, the positioning jig is separated into an upper jig 10 and a lower jig 30, and these jigs 10, 30 constitute a “jig body”. The jigs 10 and 30 are individually based on the frames 12 and 32, and the frame 12 of the upper jig 10 can be lifted up from the state shown in the figure by a lifter, a robot or the like (not shown). On the other hand, the frame 32 of the lower jig 30 is installed on the floor.
[0011]
Now, four reference posts 14 are fixed downward on the frame 12 of the upper jig 10. Adjacent reference posts 14 are connected to each other by a reinforcing beam 15. The reference post 14 and its accessory parts constitute a “reference” for positioning a predetermined component (sub assembly) of the workpiece 50 (E / C assembly) from the inside as necessary. Further, the frame 12 is provided with a total of about eight clampers including a clamper 16 located on both sides of the frame 12 and a clamper 20 located on the upper surface. These clampers 16 and 20 can clamp and unclamp the workpiece 50 by driving control of the individual air cylinders 18 and 22.
[0012]
Four reference posts 34 are fixed upward on the frame 32 of the lower jig 30, and these are arranged at intervals corresponding to the reference posts 14 of the upper jig 10. In addition, the ends of the reference post 14 of the upper jig 10 and the reference post 34 of the lower jig 30 are fitted together with the jigs 10 and 30 docked as shown. The frame 32 is provided with a total of about seven “references” made up of the reference posts 34 and other parts, and the components (sub assy) of the workpiece 50 are positioned from the inside by these “references”. ing.
[0013]
The “reference” of the lower jig 30 is configured so that the components of the workpiece 50 common to each vehicle type can be positioned. On the other hand, the “reference” of the upper jig 10 is configured to position the components of the workpiece 50 that vary depending on the vehicle type as needed. The frame 32 of the lower jig 30 is provided with a plurality of clampers including the clampers 36 and 40. The clampers 36 and 40 can clamp and unclamp the workpiece 50 by driving control of the air cylinders 38 and 42, respectively.
[0014]
Of the various sub-assies that make up the work 50, that is, the E / C assembly, the dash assembly, radiator support assembly, and assembly that combines the apron and front side members, which are common sub-assies for each model, The jig 30 is held while being positioned. In this positioning operation, the sub assy common to each vehicle model is assembled and positioned from the outside with respect to the reference post 34 and the reference pin 35 of the lower jig 30 and clamped by the clampers 36 and 40 described above.
[0015]
That is, since the “reference” of the lower jig 30 positions the common sub assembly of the workpiece 50 from the inside thereof, it is easy to set these sub assemblies and “reference” for spot welding between the sub assemblies. Will not interfere with the welding gun. Further, in the lower jig 30, the clamper 36 and the part of the clamper 40 that clamp the workpiece 50 from the outside are also provided at positions that do not prevent the welding gun from entering as much as possible.
[0016]
Depending on the vehicle model, the upper jig 10 is docked to the lower jig 30 as necessary, so that the ends of the individual reference posts 14 and 34 fit into each other as shown. The sub assembly that is changed by the vehicle type in the E / C assembly is held in a state of being positioned with respect to the upper jig 10. Also in this case, the sub assembly is assembled from the outside to the reference post 14 of the upper jig 10 and clamped by the clampers 16 and 20 described above.
[0017]
In this way, the sub assy that is different for each vehicle type is also positioned from the inside by the reference post 14 that is the “reference” of the upper jig 10 and its accessory parts. Therefore, the setting of these sub assemblies is easy, and the “reference” does not prevent the welding gun from entering during spot welding. In the upper jig 10 as well, the clamper 16 that clamps the workpiece 50 from the outside is provided at a position that does not prevent the welding gun from entering as much as possible.
[0018]
As described above, since the workpiece component (sub assembly) common to each vehicle type can be positioned for the lower jig 30, only the upper jig 10 is selectively docked to the lower jig 30 according to the vehicle type. Can be used for each vehicle type, and its versatility is improved. It should be noted that the upper jig 10 is selectively used in cases where the reference post 14 and the clampers 16 and 20 are selectively used, and whether or not the upper jig 10 itself is used. For vehicle model changes and the like, it may be sufficient to prepare only the upper jig 10 corresponding thereto.
[0019]
In the present embodiment, the E / C assembly of the vehicle is described as an example of the workpiece 50 to be positioned. However, if the workpiece is composed of a common component and a component that is changed depending on the vehicle type, the E / C assembly is used. It is not limited to.
[Brief description of the drawings]
FIG. 1 is a front view showing a positioning jig.
FIG. 2 is a right side view of FIG.
[Explanation of symbols]
10 Upper jig 14 Reference post (reference)
16 Clamper 20 Clamper 30 Lower jig 34 Reference post (reference)
36 Clamper 40 Clamper 50 Workpiece

Claims (2)

A positioning jig for positioning each component in the workpiece assembly process. The jig body is separated into an upper jig and a lower jig. Standards for positioning parts are provided together, and the upper jig is provided with a standard for positioning workpiece components that vary depending on the vehicle type. A positioning jig arranged to position. The positioning jig according to claim 1, wherein the upper jig and the lower jig include a clamper that holds a workpiece component in a positioning state with respect to each reference. A positioning jig that is arranged so as not to prevent the welding gun from entering the clamp.

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